6 things to watch for when Kamala Harris debates Donald Trump6 things to watch for when Kamala Harris debates Donald Trump 

Kamala Harris on Tuesday night faces a task unprecedented in modern political history. On the debate stage in Philadelphia, she will deliver both an opening argument – to the millions of voters who want to know more about her – and a closing argument – for her candidacy and against Donald Trump’s – as their lightning campaign enters its final eight weeks.